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Financing Arrangements - Schedule of Interest Expense (Details) - Convertible Notes - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Debt Instrument [Line Items]        
Contractual interest expense $ 0.5 $ 1.1 $ 1.1 $ 2.3
Amortization of debt issuance costs 0.0 0.1 0.1 0.2
Total $ 0.5 $ 1.2 $ 1.2 $ 2.5